Mk1.5 Wheel Help Please

pretty new to the site and was just wondering if anyone has any experience with banded steels on a focus the same as mine as I have the coilovers here and my steels ready to get banded am refusing to fit coilovers untill i have my wheels done as it will look silly wanted them about 8 or 9j with streched 195 55 15 tyres (they do go that far iv checked will have to buy michelins though as they are softer in the side)was wondering if anyone could give me any guidence into what offset (et) I would have to have my wheels made too so they would be a good fit with little or even better no problems (rubbing andd that) and being able to go as low as I can thankyou